Engine.



no. 6s|,|so. Patented Aug. 27, wol..

` J. c. BAKER.

ENGINE.

(Application filed ept. b, 1900.)

(no Model.) V a sheets-sheer 2.

Hdhjasses Patented Aug. 27, |90I. J. C. BAKER.

No. 6a|,|a0.

ENGINE.

(Application led Sept. 5, 1900.)

3 Sheets-Sheet 3.

(lo Model.)

6 ...y Hl 6 To all whom it 17mg/ concern.: Beit known that I, J osEPHCLARKBAKER, a citizen of the United States, residing at Warren, in thecounty of Tyler and State of Texas, have invented a new and usefulEngine, of which the following is a specification. This inventionrelates to steam-engines in general, and more particularly to the classof reciprocating steam-engines, although the ini iventionisequallyapplicabletoenginesdriven N by any fluid-pressure, theobject of the invention being to construct an engine in ,which v bothlive steam and exhaust-steam may be utilized against a single piston toreciprocate it. i i v Further objects and advantages of the inventionwill be apparent from the following i description. i In the drawingsforming a portion of this specification, and in which like numerals ofreference indicate similar parts in the several views, Figure 1 is aside elevation showing the complete engine, the shaft being shown insection and the ily-Wheel omitted. Fig. 2 @is a section on line 2 2 ofFig. 1, the piston and its rod, with the shaft, eccentrics, and i someof the connected parts, being in elevation. Fig. 3 is a section on line3 3 of Fig. 2. Fig. 4 is a section on line 4 4 of Fig. 2. Fig. `5is anelevation showing one of the valveoperating mechanisms.

Referring now to the drawings, the engine y of the present inventionconsistsof acylinder 5, having three steam-chests 6, 7, and 8,

and in this cylinder is disposed a reciprocatory piston 9, having a rod10, which connects i i with a cross-head 1l, with which is connected laconnecting-rod 12, leading to the crank 13 `of the engine-shaft 14.

Leading to the steam-chest@ is a feed-pipe i 15, including a valve 16,the casing of which `contains two valve-seats 17 and 1S, of which theformer is the throttle-seat and receives the throttle-valve head 19,operated by a screw-stem in the usual manner. The valveseat `13 islocated `between the :seat17 and i the steamy-chest and is adaptedtoreceive a reciprocatory` valve-head 20, the stem 2l of which is pivotedto a bell-crank lever 22,

y `which is in turn connected with an operatingi i rocker 23. Thisrocker23 is pivoted upon a `1 standard 24 and has a connecting-rod 25 ad-JOSEPH CLARK BAKER, OF VV-ARREN, TEXAS.

ENGINE.

sPncInIcArIoN 'forming part of Lettere raten'. No. 681,180, dated Augusta?, 1901. Application filed September 5, 1900. Serial No. 29, 065. (Nomodel.)

just-ably connected therewith and leading to the collar 26 of a commonform of ballast-ball device. Thus as the collar is raised by the outwardswinging of the ballast-balls the rocker is moved pivotally to close thegovern ing-valve and cut oft the supplyof steam.

Steam-ports 30 and 31-lead from the chest 6 to the front and rear endsof the cylinder, respectively, Aand these ports are opened and closedalternately by means of rotary valves 32 and 33,- disposed incylindrical casings 34 and 35, which communicate with the ports and thesteam-chest, these rotary valves being substantially triangular andhaving their edges snugly fitting against the inner faces of thecasings. The casings 34 and 35 communicate with the chest 6 throughports 36 and 37, which lie at right angles to the ports `30 and 31, sothat for each rotation of one hundred and twenty degrees the ports 36and 37 will be brought into communication and then out of communication.To operate `these valves to bring their respective ends of the cylinderinto communication with the chest 6 alternately, the end of each valveeX- terior` to the chest is provided with a ratchet wheel, (shown'at 38and 39,) and upon the projecting ends of the valves are pivotallymounted rockers 40 and 41, carrying pawls 2 and 43, the pawls andratchets being oppositely disposed and the rockers being connected witha common rod 44, so that as the rod is reciprocated the rockers Will beoperated to engage their pawls with the ratchets and rotate the valvesalternately to communicate theiports governed thereby. The rod 44 isconnected with a rock-lever 45, which `is operated from aneccentric 46upon shaft 14 through an eccentric-rod 47.

The chest;7 isconnected with the ends of the cylinder` 5 by means ofexhaust-ports 49 and 50, and leading from the chest 7 to the chest 3 isan exhaust-passage 51, the ports 49 and 50 being brought alternatelyinto communication with the` passage ltthrough the medium of anoscillatory valve 52, of "disk shape to t snugly in chest 7, this valve52 having a recess 53in its inner face, which` covers first port 49 andthe passage. 51 and then port 50 and passage 5l. This valve isoscillated by means of a connecting-rod 54, attached to the crank-shaft55 of the valve the opposite side of the piston is continuous during theentire stroke of the piston. The

obj ect in admitting the live steam after a portion of the strokehasbeen completed is in org der that the exhaust-steam may be utilized overagain on the face of the piston'by returning it from the exhaust side tothe feed side i of the vpiston duringthe initial movement of the piston.To .thus supply exhaust-steam to the feed side of the piston at bothstrokes of the piston, the chest 8 and its cooperating valves 60 and 6lare provided. The valves 60 and 6l.are cylindrical rotary valves,.andeach :hasa passage cut in its face, these .passages of the valves being`adapted tocommunicate the :feed-ports 62 and 63 alternately with `thechest8, which communicates with the chest 7 through the exhaust-passage5l.

,Each of the valves 60 and 6l has a disk 64 and 65, respectively, uponthe exposed end of itsstem, said disks having lugs 66 and 67,respectively, each having .a flat face .and .a curved face, the lIiatfaces beingdisposed to- Wardeach other orrin opposite directions,-asshown kin Fig. 6. These lugs are adapted for engagement alternately byoppositely -disposed triggers 68 and 69, which are springpressed and aremounted upon a reciprocatory rod 70, operatively'conuected Withtherocker 45. v.Thus as the rod 70 is reciprocated its triggers alternatelyengage .and release the lugs to open the valves and permit them `toclose, the closing of the valves'beingaccomplished by means Vof springs7l and 72, disposed in-casings 7 3 and 74, and against which presspistons. having rods 75 and`7 6, pivotally connected Withcran k-arms 7 7and.78, fixed to the valves. y

The operation of theengine is as follows:` The valvesbeing in thepositions shown, the piston is traveling toward the rear of the cylinderand the exhaust-port 50 is in communication With the exhaust-passage 5l,as in-` dicated in dotted .lines in Fig. 1 of the drawings, the chest 8being in communication with the front end of the cylinder through theport 62. The exhaust-steam from the rear end of: the cylinder then runsto the front end of the cylinder and feeds thereinto` during aportion ofthe stroke of the piston, the `ports 30 and 31 being at this time cutoff. When the stroke is partly completed, the valve is closed andvalve.32 is opened, when the live steam enters through .port 30, t0.thefront side of the'piston and drives the vrod 84.

pose a valve 8O is provided in the exhaust pipe 8l, which leads from theexhaust-passage 51, said valve .having itsv stem 82 connected with abell-crank lever 83, which is in turn connected with rocker 23 by meansof a Thus when there is an excessive accumulation of steam in chest 8the speed of the engine decreases, when the ballast-balls -drop and openthe valve 8l to permit exhaust of steam, the governor-valve being at thesame time opened to admit more steam.

When the engine is to be used without utilizing the exhaust-steam in themanner above described, a gate-valve86, Which'governs the end of .theexhaust-passage 51 where it-enters chest S, is closed and the stem offvalve 8O is 'released from its operating mechanism and-is opened topermit the exhaust to pass directly from the exhaust-passage through thevalve. The gate-valve has Aa yro'd 87, through .the medium of whichsaidvalvemay be operated by hand.

'What is claimed is* 1. A steam-engine comprising a cylinder having a.piston therein, a steam-chest for live steam having portscommunicatingwith the ends of the cylinder, valves adapted 'to open andclose said ports alternately, exhaust-.ports for the-cylinder, anexhaust-pas*- sage, a valve adapted to communicate theex'- haust-passageWith the exhaust-ports alternately, a chest communicating with :theexhaust-.passage, kand valved ports communicating the last-named chestwith the ends of the cylinder, said last-named valves being adapted foroperationalternately and inadvance of the valve of the live-steam chest.

2. Avsteam-engine comprising a cylinder having a piston therein, a.steam-chest for live steam, valved ports connectingsaid chest withopposite ends ofthe cylinder andadapt- IOO ed for alternate operation,Aexhaust-ports for the cylinder, an exhaust-passage, a valve forcommunicating the exhaust-passage with the exhaust-ports alternately, achest connected with theexhaust-passage, valved ports lead- IIO ing fromthe last-named chest tothe ends of the cylinder to supply exhaust-steamthereto alternately, a relief-valve, a governor .connected with therelief-valve for operating it, and means for opening the live-steam`'feedports subsequent to the opening of the exhaust-steam feed-ports.

In testimony that I claim the foregoing as my own I have hereto affixedmyv signature in the presence of tWo Witnesses.

JOSEPH CLARK BAKER. Witnesses:

T. 1B.' BEATY,

C. Y. GREGORY.

